I went on a partial solo trip when I was in my early 20's (I am now...old..ok young to some but I am 36).
I flew down alone (I love being on the plane alone-I used to visit my cousin a few times a year in Stuart, FL & would fly alone). My sister, my neice, my cousin, her 3 kids & one of her kids friends all met me at the WL & they stayed there for a night or two. They left & I still had 2 days at the park alone.
Sometimes I felt lonely but I also liked being able to do what I want, when I wanted to do it.
Luckily my dh does the same things I do only because that is how I trained him.
Oh & I also went to Club Med in the Bahmas for a week all alone. That was really nice too. I did meet a few people & they had me eat dinner with them & go on the snorkel cruise with them but it was nice just being alone & just sitting there on the beach with out a care in the world.